JP2807746B2 - Vibration pump - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vibration type pump. More specifically, the present invention relates to a vibration type pump having a small number of parts and a simple structure. INDUSTRIAL APPLICABILITY The pump of the present invention can be applied as a low-pressure pump to fields for supplying air and water, such as for septic tanks, fish culture, and physics and chemistry.

[Problems to be Solved by the Related Art and the Invention] Conventionally, vibration that sucks and discharges a fluid based on the magnetic interaction between an electromagnet and a permanent magnet using vibration of a vibrator provided with the permanent magnet. The type shown in FIG. 4 is generally used as a mold pump.

The pump shown in FIG. 4 is an E-shaped iron plate laminated core (51)
The two electromagnets (52) completed by winding the coils on the iron frame (59) are installed facing each other, and the two electromagnets (5
2) Permanent magnet (54) in three working gaps formed between
The vibrator (55) provided with is suspended by a rubber diaphragm (56). Then, the vibrator (55) vibrates right and left (as shown in FIG. 4) by the repelling force of the working air gap magnetic flux generated in accordance with the commercial alternating voltage applied to the electromagnet (52) and the permanent magnet. The volume of the pump compression chamber (57) changes in accordance with the displacement of the diaphragm (56) corresponding to the vibration of the vibrator (55), thereby performing a pump action of sending or sucking a fluid.

However, the conventional pump cannot use the electromagnet (52) and the iron frame (53) because of its structure, and thus has the disadvantages that the number of parts is increased and the structure is complicated.

In view of the circumstances described above, an object of the present invention is to provide a vibration-type pump capable of reducing the number of parts as much as possible and simplifying the structure without lowering the function and characteristics of the pump body. And

[Means for Solving the Problems] A vibration type pump according to the present invention comprises: (a) an outer cylinder formed of a bottomed cylindrical body; and (b) an inner cylinder disposed coaxially with the outer cylinder in the outer cylinder. (C) provided in a gap between the outer cylinder and the inner cylinder;
(D) at least one cylindrical electromagnetic coil in which a coil is wound cylindrically in an annular magnetic pole having a substantially U-shaped cross section;
A magnet vibrating body in which the same number of cylindrical magnets magnetized in the radial direction as the cylindrical electromagnetic coil are mounted on the bell-shaped frame; and (e) a central axis of the magnet vibrating body for supporting the magnet vibrating body Consisting of a diaphragm mounted in the direction,
The electromagnetic coil is arranged so that the outer peripheral surface thereof is in contact with the inner peripheral surface of the outer cylinder, and the magnet vibrator includes an outer cylinder such that a cylindrical magnet faces the inner peripheral surface of the electromagnetic coil with a gap therebetween. A cylindrical slide bearing is provided in the space of the inner cylinder and provided outside the inner cylinder or inside the frame of the magnet vibrator.

Hereinafter, a vibration type pump of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic explanatory view of an example of a vibration-type pump according to a reference example of the present invention which does not have a magnetic pole having a substantially U-shaped cross section, and FIG. 2 is a schematic description of an example of a vibration-type pump according to the present invention. Figure,
FIG. 3 is a schematic explanatory view of another embodiment of the vibration type pump according to the present invention.

First, a pump according to a reference example of the present invention, which does not have a magnetic pole having a substantially U-shaped cross section, will be described.

In FIG. 1, (1) is an outer cylinder formed of a thin cylindrical body having a bottom (2), which is formed by forming an iron plate having a thickness of about 1 to 2 mm. Inside the outer cylinder (1), an inner cylinder (3) also formed of a thin cylindrical body is disposed coaxially with the outer cylinder (1). In a gap (4) between the outer cylinder (1) and the inner cylinder (3), a cylindrical electrode coil (5) formed by winding a copper wire or the like is arranged.

(6) is a magnet vibrating body having a structure in which a cylindrical magnet (8) magnetized in the radial direction is mounted on the outer periphery of a bell-shaped frame (7). Part of the magnet vibrator (6) is an outer cylinder (1).
And the inner cylinder (3) are inserted into the gap (4). In addition,
Although the cylindrical magnet (8) shown in FIG. 1 is magnetized on the N pole on the inside and the S pole on the outside, it is of course possible to use a magnet magnetized reversely. As the cylindrical magnet (8), a ferrite magnet, a rare earth magnet, or the like can be used.

The magnet vibrator (6) is connected to a diaphragm (10) made of EPDM or the like via a center plate (9), and the diaphragm (10) causes the magnet vibrator (6) to move.
Is supported. The center plate (9) is provided on both sides of the diaphragm (10), and is an element that pushes and pulls the diaphragm (10) to displace vertically (in FIG. 1). The magnet vibrator (6) has a mounting seat (11)
Are fixed to the diaphragm (10) by bolts (12) and nuts (13).

The outer peripheral end (14) of the diaphragm (10) is the outer cylinder (1)
It is fitted with a diaphragm base (15) made of PBT or the like fixed with bolts on an extension of the pump casing (16). A pump compression chamber (17) is formed by the concave portion of the diaphragm (10) and the pump casing (16). The pump casing (16) further has a suction chamber (18) and a discharge chamber (19). The suction chamber (18) has a suction port (20) and a suction valve (21), and the discharge chamber (19) has Discharge port (22)
And a discharge valve (23). A tube (not shown) or the like is connected to the discharge port (22). Suction valve (2
As the 1) and the discharge valve (23), other types of valves such as a circular valve can be employed in addition to the lip valve shown in FIG.

The pump casing (16) is made of PBT or the like, and is fixed to the extension of the outer cylinder (1) by bolts together with the diaphragm base (15) in the example shown in FIG. 1, but is fixed by an adhesive. You may do so.

In the example shown in FIG. 1, a spring (24) is provided inside the cylinder (3). The spring (24) plays a role in improving the vibration efficiency of the magnet vibrator (6). That is, due to the structure of the magnetism and the magnetic path, the attractive force is larger than the repulsive force.
Thus, a part of the energy at the time of suction is stored, and the stored energy is released at the time of rebound, so that the energy is effectively used and the vibration efficiency is enhanced. In addition, by adjusting the spring constant of the spring (24), the frequency of the power supply and the natural frequency of the pump movable section can be synchronized, so that the pump output can also be increased.

Further, by providing the housing (42) outside the pump casing (16) so as to cover the pump casing, it is possible to reduce the sound accompanying suction and discharge of the fluid.
In the embodiment shown in FIG. 1, the housing (42) serves not only as a pump outer casing but also as a sound deadening tank, thus helping to reduce the number of parts.

Next, the operation of the example shown in FIG. 1 will be briefly described.

When an alternating current is applied to the electromagnetic coil (5), the outer cylinder (1) and the inner cylinder (3) become N pole or S
Magnetized to poles. FIG. 1 shows the case where the outer cylinder (1) is magnetized to the north pole and the inner cylinder (3) is magnetized to the south pole.
At this time, the outer part of the cylindrical magnet (8) and the outer cylinder (1),
And the inner part of the cylindrical magnet (8) and the cylinder (3) attract each other, and the magnet vibrator (6) moves downward in FIG. 1 as indicated by the arrow. The diaphragm (10) also moves downward in conjunction with the movement of the magnet vibrator (6), and a fluid such as air is sucked into the pump compression chamber (17). Next, when the polarity of the AC power source is reversed, the outer cylinder (1)
And since the polarity of the inner cylinder (3) is opposite to the previous one, the magnet vibrator (6) is now repelled and moves upward to push up the diaphragm (10). As a result, the fluid sucked into the air compression chamber (17) is discharged from the discharge chamber (19). Thus, the volume of the pump compression chamber (17) changes due to the vibration (displacement) of the diaphragm (10), and a fluid such as air or water is sucked and discharged.

Next, a pump related to the pump of the present invention will be described.

The pump shown in FIG. 2 uses an electromagnetic coil (31) in which a coil is wound cylindrically in an annular magnetic pole (32) having a substantially U-shaped cross section. The electromagnetic coil (31) is disposed so as to be in contact with the inner peripheral surface of the outer cylinder (33). The electromagnetic vibrator (34) has its cylindrical magnet (35)
Is inserted into the gap between the outer cylinder (33) and the inner cylinder (36) so as to face the inner peripheral surface of the electromagnetic coil (31) with a gap therebetween.

As described above, the embodiment shown in FIG. 2 has a structure in which suction or repulsion can be made at two places in the axial direction. Therefore, the pump pressure or output can be increased as compared with the example without the substantially U-shaped magnetic pole shown in FIG. Further, the pump shown in FIG. 2 can substantially balance the suction force and the repulsion force, so that a spring need not be provided unlike the pump shown in FIG. However, when the spring is provided, there is an advantage that the tuning frequency can be easily adjusted.

Since the magnet vibrating body (34) is supported on only one side by the diaphragm (37) and is unstable, when vibrating, the cylindrical vibrating body (35) and the annular magnetic pole (32) or the bell-shaped frame (38) The inner cylinder (36) may come into contact with it and cause wear and noise. For this reason, a cylindrical slide bearing is provided outside the inner cylinder (36) or inside the bell-shaped frame (38).

Furthermore, it is preferable to provide a valve (40) at the bottom (39) of the outer cylinder (33), take out the air pressure in the opposite phase to the air pressure generated by the pump body during operation, and combine and mix the two air pressures. The pump flow can be approximately doubled. Output air is supplied to the housing (4
By leading to 7), the noise reduction effect can be increased.

In the embodiment shown in FIG. 3, two cylindrical magnets (45) are attached to a bell-shaped frame (44), and two corresponding electromagnetic coils (46) are provided. Therefore, the output can be further increased as compared with the embodiment shown in FIG. Although not shown, three or more sets of cylindrical magnets and electromagnetic coils can be provided.

The operation of the pump shown in FIGS. 2 and 3 is basically the same as that shown in FIG. 1. For example, in the state shown in FIG. 2, the magnet vibrator (34) is lowered (FIG. 2). ), And in the case of the opposite polarity, move upward to perform the suction and discharge of the fluid.

[Effects of the Invention] As described above, according to the pump of the present invention, there is an effect that the number of parts can be reduced and the structure of the pump can be simplified. As a result, the manufacturing process is simplified, and the cost of the product can be reduced along with the reduction of the material cost.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of an example of a vibration-type pump according to a reference example of the present invention which does not have a magnetic pole having a substantially U-shaped cross section, and FIG. 2 is a schematic description of an example of a vibration-type pump according to the present invention. FIG. 3 is a schematic explanatory view of another embodiment of the vibration type pump according to the present invention, and FIG. 4 is a schematic explanatory view of a conventional vibration type pump. (Main symbols in the drawings) (1), (33): outer cylinder (3), (36): inner cylinder (5), (31), (46): electromagnetic coil (6), (34): magnet vibration Body (7), (38), (44): Bell frame (8), (35), (45): Cylindrical magnet (10), (37): Diaphragm (16): Pump casing

Claims (4)

(57) [Claims] 1. An outer cylinder comprising a bottomed cylindrical body, (b) an inner cylinder disposed in the outer cylinder coaxially with the outer cylinder, and (c) a space between the outer cylinder and the inner cylinder. And at least one cylindrical electromagnetic coil in which a coil is wound cylindrically in an annular magnetic pole having a substantially U-shaped cross section; and (d) a cylindrical magnet magnetized in a radial direction. A magnet vibrator mounted on the outer peripheral surface of the bell-shaped frame by the same number as the cylindrical electromagnetic coil; and (e) a diaphragm attached in the direction of the center axis of the magnet vibrator to support the magnet vibrator. The electromagnetic coil is disposed so that its outer peripheral surface is in contact with the inner peripheral surface of the outer cylinder, and the magnet vibrator is arranged such that the cylindrical magnet faces the inner peripheral surface of the electromagnetic coil with a gap therebetween. Inserted into the gap between the cylinder and the inner cylinder, and outside the inner cylinder or the magnet vibration A vibratory pump characterized in that a cylindrical slide bearing is provided inside a body frame. 2. A pump according to claim 1, wherein a valve is provided at a bottom portion of the outer cylinder to take out an air pressure having a phase opposite to an air pressure generated by the pump body during operation, and to combine and mix the two air pressures. . 3. The pump according to claim 1, wherein a housing is provided outside the pump casing constituting the air chamber so as to cover the pump casing. 4. The pump according to claim 1, wherein a spring is provided inside or outside said inner cylinder.